I recently bought a Milwaukee Road F7 A and B set used from a seller on ebay. It arrived last night and I was eager to get it on my DC wired layout. Once on the tracks everything worked well, sound and lights, but the locomotive slowed down and sped up as it moved along the tracks. I saw the wheels were dirty and thought this may be the issue. I cleaned them with a paper towel with some WD40 by holding the locomotive in place and allowing the wheels to spin on the towel. As I was cleaning the sound cut out and the wheels stopped spinning as fast. I removed the shell and ran it around the layout, it was not as fast anymore and the speaker crackled just before the locomotive started moving, and then it stopped when the engine was moving. As it rounded the curve a plume of smoke rose from the locomotive and I stopped running it. I couldn't get to it in time to see where the smoke was coming from. The number board and cab lights work now but the mars light and headlight lights do not, it's not as fast, and the speaker still crackles. I stopped using it last night. I included pictures of the inside of the engine but there's nothing that i can see wrong with it. I also included a picture of my DC controller. The layout has power wired to the tracks in every 6 feet. I'm fairly certain it's broken if it wasn't already. If anyone has any input on this I would appreciate it.
Thanks-
Ben
Thanks-
Ben